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                   4,4’-Diaminostilbene-2,2’-disulf..
                   p-nitrotoluene-o-sulfonic acid ..
                   4,4-Dinitrostilbene-2,2-disulfon..
                   Aniline-2,5-disulfonic acid mono..
                   Para Amino Azo Benzene 4 Sulfoni..
                   4-aminobenzene-1,3-disulphonic a..
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            Chemical name: Para Amino Azo Benzene 4 Sulfonic Acid
            Structural formula: 
                         

            Chemical formula: C12H11N3O3S
            Molecular weight: 277.3
            CAS NO.:104-23-4
            Quality index:

            Item Index
            Appearance Orange to Brown Powder
            Water 1% Maxi
            Water Insolluble 0.2% Maxi
            4-Aminoazobenzene-3’-sulfonic
            acid  [102-23-8]
            1 %  Maxi
            4-Aminoazobenzene [60-09-3] <  0.1%
            Sulphate  content 2500  PPM  Maxi
            Ash  content 0.1%  Maxi

            Main use: it is an intermediate of dyes, can be used to manufacture Acid Yellow 6, Acid Red 151, Acid Red 7, Acid Red 142, Direct Red 152
            Packing: 25kg plastic woven bag or upon clients' request.